When an iron nail gets rusted, iron oxide is formed
1 Without any change in the weight of the nail
2 With increase in the weight of the nail
3 With decrease in the weight of the nail
4 None of these
Study Of Life in outer space is known As
What is the Organic Evolution ?
difference between ancient age,middle age & modern age.
What is the colouring matter in plants called
Which of the following is a chemical change? 1 Magnetization of iron 2 Melting of ice 3 Burning of sulphur 4 Melting of wax
Who is the first female cosmonaut?
In which year the solar observatory in kodikanal founded?
Which of the following materials are used for preparing blur-black ink? 1 Gallic acid 2 Tannic acid 3 Ferrous sulphate 4 All of these
Dear Sir I have got through cable size calculation 10 sq mm cable size of one panel, how i be sure that used cable is 10sqmm. a) By measuring each strand of cpper & multilpy by pye and so on...... or By measuring any one cable core with insulation only.
Reaction of alcohol, with a carboxylic acid is known as 1 Substitution Reaction 2 Addition reaction 3 Esterification 4 Hydrogenation
What is the significance of international geo - physical year?
Which of the following is used as a filler in rubber tyres? 1 Graphite 2 Coal 3 Coke 4 Corbon black